This paper examines small-world phenomena in communications systems focusing specifically on three networks each operating in different geographical spheres. The first is the logical IP (Internet Protocol) fibre optic infrastructure that connects major metropolitan areas in the United States...

Along with the increasing pace of globalization, recent decades faced a dramatically increase in international migrant flows as well. Compared to the flows of trade, capital and knowledge, we observe that contemporaneous complex institutional differences, historical backgrounds, and individuals'...